Home / 3,618.60-5,428.33-1,021.53

Finding the Fourth Proportional to 3,618.60, 5,428.33 and 1,021.53

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Solution

The fourth proportional to 3,618.60, 5,428.33 and 1,021.53 is: 1,532.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.60 : 5,428.33 = 1,021.53 : x
  2. Step 2: Convert to fraction form
    3,618.60/5,428.33 = 1,021.53/x
  3. Step 3: Cross multiply
    3,618.60x = 5,428.33 × 1,021.53
  4. Step 4: Simplify right side
    3,618.60x = 5,545,201.94
  5. Step 5: Solve for x
    x = 5,545,201.94/3,618.60
  6. Step 6: Final answer
    x = 1,532.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.